Spring applied automative parking brake system

Details Spring applied automative parking brake system Spring applied automative parking brake system

1994-12-13

1997-02-11

Oberleitner, Robert J.

Brakes

Operators

Spring

192 4A, F16D 6516, B60K 4128

Patent

active

056011628

ABSTRACT:
A spring applied parking brake system for a vehicle including a housing connected with the vehicle chassis, a pivot arm assembly for connection with the parking brake cable of the vehicle, a main spring biasing the pivot arm assembly toward a brake-applied position relative to the housing, a spring compression assembly operable to displace the pivot arm assembly toward a brake-released position relative to the housing, a retaining device normally retaining the pivot arm assembly in the brake-released position, and a release device for releasing the retaining assembly, whereby the pivot arm assembly is released for displacement by the main spring toward the brake-applied position. Preferably, the retaining device includes a helical clutch spring mounted concentrically on a rotatable hub portion of the pivot arm assembly and the compression assembly includes a hydraulic or pneumatic pump and piston.

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Hayes Industrial Brake, Inc.; Advertisement entitled "Spring Applied Hydraulic Release Chamber".
"New Design Prevents Spring Explosion When Servicing Brake Parts"; reprinted from Power Transmission Design, Penton Publishing, 1990.

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